I'm reticent to get into this because it involves value judgments about what's "useful". Are in-game skin purchases useful? Not really. Should we prevent then from being sold because they don't match your definition of usefulness?

To my thinking, provably fair casino games are a useful innovation that sprang from cryptocurrency. Decentralized poker is another. If you find the entire global gaming industry useless, then I guess those are also useless innovations. Again, that's a value judgment.

I don't think it's fair to conflate the people/businesses trying to profit from the crypto speculation craze, pyramid shemes or shitcoins, with e.g. businesses that want to accept crypto to avoid paying a % of their income to Visa. Yet that's what this law would do.